Really neat idea! I love the premise of being an underling to an annoying hero.
I found the games difficulty to be a bit intense, sometimes the hero is a little too demanding. I would recommend allowing you to shop from anywhere, or having more then one shop. I also ran into an issue getting the hero the 2nd cup of coffee, even with a few speed upgrades I had a really hard time getting it to him across the map.
The UI and starting tutorial is also a little crazy with text layering over itself, made it a bit hard to get my bearings.
All in all, I love the concept! Clean it up a bit, maybe rebalance and I'd love to play it again.